Modifiers matching period:

• acute,
• busy,
• special,
• prolonged,
• specified,
• short,
• floral,
• historical,
• fixed,
• uncertain,
• reproductive,
• literary,
• dry,
• seasonal,
• unfavourable,
• popular,
• stressful,
• shorter,
• over,
• discrete,
• critical,
• promotional,
• crucial,
• shortened,
• substantial,
• developmental,
• small,
• long,
• extraordinary,
• classical,
• set,
• key,
• smaller,
• major,
• defined,
• quiet,
• diverse,
• vulnerable,
• fiscal,
• irregular,
• windy,
• christian,
• regular,
• reasonable,
• future,
• holy,
• relevant,
• unstable,
• intensive,
• waiting,
• archeological,
• wet,
• difficult,
• common,
• longer,
• statutory,
• cold,
• important,
• prescribed,
• real,
• limited,
• industrial,
• heavy,
• residential,
• muslim,
• festive,
• procedural,
• painful,
• basic,
• productive,
• intense,
• congested,
• significant,
• off,
• natural,
• standard,
• hectic,

Simple categories matching unstable:

• surface,
• support,
• lubricant,
• terrain,
• object,
• weather,
• control,
• elements,
• event,
• material,
• structure,
• article,
• phenomenon,
• apparatus,
• portion,
• location,
• particle,
• network,
• basin,
• compound,
• stone,
• molecule,
• situation,
• period,
• solid,
• mineral,
• place,
• artifact,
• grain,
• gas,
• system,
• medium,
• community,
• substrate,
• component,
• soil,
• container,
• operation,
• matter,
• substance,
• formation,
• form,
• slope,
• rock,
• aircraft,
• protein,
• assembly,
• elevation,
• vehicle,
• item,
• chemical,
• equipment,
• fabric,
• star,
• ground,
• region,
• earth,
• furniture,